Virus help??

k i got a trojan virus on my computer,, and probably lots of other viruses,, this virus put things on my desk top, make pop ups, tells me system alerts adds thing to my favorite, and lots of other things,,,, i already have avast, and ad-aware on my computer,, why don't these programs get rid of it? it says its quarantined,, but the virus keeps comming back,, is it impossible to get rid of?? please help me:(,,,,,

Virus help??antispyware

without knowing what the trojan is makes getting rid of it harder,

so, try going to www.bitdefender.com and use its free virus scanner, also restart ur pc while pressing F8 to enable safe mode and then run ur antivirus and also ur ad-aware.

Virus help??best antivirus software

Here is a list of free scans.I would recommend running ewido first.

Spybots search and Destroy http://www.download.com/3000-8022-101221...

adaware se%26gt; http://www.download.com/Ad-Aware-SE-Pers...

http://www.webroot.com/land/freescan.php

a-squared Free%26gt; http://www.emsisoft.com/en/software/free...

http://housecall.antivirus.com/housecall...

http://housecall65.trendmicro.com/

X -Cleaner Micro Edition scan http://www.spywareguide.com/onlinescan.p...

http://www.kaspersky.com/virusscanner